baber/WOPTO huggingface dataset:
Patent GB-205215-A (GB)
Title: Improvements in and relating to electric motor control
IPC: H02P5/74
Filed: 1922-07-15
Abstract: 205,215. British Thomson-Houston Co., Ltd., and Given, R. D. July 15, 1922. Speed-maintaining systems. - In order to maintain constant but adjustable, speed ratios between motors driving different parts of papermaking or other machinery, one of the motors 1, acting as the master motor, drives a small alternator 9 supplying current to rotating wound armatures of small machines 14 driven respectively by the other motors of the group 2, 3. The magnetization of the armatures due to the current rotates in a direction opposite to that in which the armatures are driven through variable ratio pulleys 25, and is thus normally stationary with regard to rotatable field frames excited by direct current from a motor generator 12. The field frames are geared through spindles 6 to brush shifting or other speed-changing devices adapted to correct the speed of the motors.
Patent GB-1512802-A (GB)
Title: Nitrodiphenylamine monoazo dyes
IPC: C09B56/00
Filed: 1975-05-09
Abstract: 1512802 Nitrodiphenylamine monoazo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 23 April 1976 [9 May 1975] 19611/75 Heading C4P Novel water-soluble monoazo dyes have, in the free acid form, the formula wherein R' is H, halogen, hydroxyl, alkyl, alkoxy or acylamino, R<SP>2</SP> is H, halogen, alkyl, alkoxy, cycloalkyl or aryl, R<SP>3</SP> is H or alkyl; and R<SP>4</SP> is alkyl, the -OR<SP>4</SP> group being in the 2- or 4-position relative to the azo group. The dyes are prepared by alkylation of the OH group e.g. with dimethyl sulphate, diethyl sulphate or ethyl chloride. They may also be prepared by condensing a halogenonitrobenzene with the appropriate aminoazo compound. They are used for applying to synthetic polyamide textile materials e.g. nylons.
Patent GB-946667-A (GB)
Title: Valve assembly for the control of fluids
IPC: F15B1/18
Filed: 1960-06-02
Abstract: 946,667. Valves. J. MERCIER. June 2, 1960, No. 19612/60. Heading F2V. [Also in Division F1] A flexible valve disc 28 of rubber-like material, e.g. a synthetic plastic material such as polyurethane, seats against a porous plug 23 and a surface 21 of the housing and is anchored at its centre by a flanged pin 29 which also retains the porous plug in position and is itself held by a ported, conical plate 37 engaged by a screwed plug 45. Flow from an inlet 52 is permitted by deflection of the valve disc but return flow is limited to an extent determined by apertures 53 or is prevented entirely if the disc is imperforate. In a modification, suitable for use in an hydraulic accumulator, the side of the porous plug remote from the valve disc has a part-spherical shape to conform to the wall of the accumulator and the valve disc is bonded at its centre to a sleeve through which passes a stud that also passes through a central hole in the porous plug and unites the two parts of which the accumulator shell is composed. It is stated that should the flexible partition which separates the gas and liquid spaces of the accumulator be pressed against the valve disc it will deform the later to close the apertures 53 and thereby prevent contact of the partition with the porous plug. In another modification, a perforated valve disc is secured by a screw near its periphery instead of by a central fixing. This form may be employed in the compressed gas inlet to an hydraulic accumulator in which case the disc is imperforate. Specification 946,668 is referred to.
Patent GB-335281-A (GB)
Title: Improvements in trucks for loading and unloading brick racks and the like
IPC: B61D3/04
Filed: 1929-06-26
Abstract: 335,281. Hartmann, G., and Hartmann, L. June 26, 1929. Vehicle fittings.-A truck for transporting brick racks &c. from the press to the drying field &c. is fitted with a platform or platforms at one or both sides and with a parallel motion mechanism for swinging the platforms outwards and downwards. The truck A has two platforms o<1> on each side for receiving the brick racks B. Mounted in the truck frame are rack bars k<1> and sliding bars l<1>. Bent levers m<1> are connected by pivots u<1> to the platforms, by pivots s<1> to the sliding bars, and by pivots r<1> to the rack bars. Parallel-motion links n<1> are also pivotally connected to the platforms and to the sliding bars. By means of a handwheel operating through bevel gearing a toothed wheel f connected by suitable gearing h<1>, i<1> to the rack bars, these bars are moved outwards carrying with them the sliding bars until spring- pressed catches z' engage notches z<2> in the sliding bars, thus holding the sliding bars against further movement. Continued movement of the rack bars then causes through the parallel-motion linkage an outward and downward movement of the platforms parallel with themselves to the ground level. By means of a lever z connected by a cord z<4> to the levers z<3> carrying the catches z', the catches are released and the platforms are withdrawn from under the brick racks and return to their normal position.
Patent GB-1513732-A (GB)
Title: Heat treatment by rotary cylinder
IPC: D21F5/02
Filed: 1974-05-04
Abstract: 1513732 Heated rollers A E WILDEMAN 23 May 1975 [4 May 1974] 19691/74 Heading F2U A heated roller comprises a heater or heat exchanger in a fluid heat transfer medium immediately beneath the working surface of the roller, the heater or heat exchanger having a surface area in the fluid greater than that of the working surface. As shown, a vapour phase heat transfer medium is contained in the space 13 between inner and outer shells 12, 11 supported by spokes 23 from manifold hubs 18, 19 and heat exchange tubes 15 are circulated with oil or other liquid by a pump 27, the temperature being raised by electric resistance elements 29 controlled by a sensor 32. The tubes 15 may be arranged to direct the flow axially towards or away from the ends of the roller from or towards the middle or in helical or wavy paths. Alternatively, the tubes may comprise electric resistance elements.
Patent GB-738737-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B1/26
Filed: 1951-08-21
Abstract: 738,737. Knitting-machines. HEMPHILL CO. Aug. 21, 1951 [Oct. 21, 1950], No. 19717/51. Class 74 (2). In a circular, independent-needle knitting- machine, yarn guides 15 are controlled by.three yarn changing means namely, a primary means such as a drum, acting through wires 40 and levers 14 and determining which guides shall be operative during a particular phase of the knitting operation, a second means, comprising cams 11, 19, 20, 21, on a drum 8, which act through levers 9, 16, 17, 18, on the levers 14, to move different ones of operative yarn guides into and out of yarn feeding position at different times in a cycle and a third means, to vary the operation of the second means, comprising lugs on the pattern chain, which act through a rocker, rod 28, spring coupling 27, 30, 31, bellcrank 26 and crank-pin 24, to rock shaft 22 and thereby so to position predetermined ones of fingers 36, 37, 38, 39, that the ends 12 of associated levers 9 &c. cannot rise after the noses of the levers have left the corresponding ones of cams 11, 19, 20, 21, whereby the associated yarn guides are maintained inactive. The lugs on the pattern chain may be of one, two or more heights, the fingers being correspondingly disposed about the shaft 22, to increase the variety of patterning. By applying this arrangement to the main side yarn guides of a circular machine, in which the leg of a sock is knitted simultaneously at main and auxiliary cam blocks, during reciprocatory knitting, the side diamonds 1, 2, 3 knitted at the main camblock may be formed of different colours, as well as the diamonds 4, 5, 6, 7, knitted at the auxiliary cam-block. The arrangement may be applied to both main and auxiliary yarn levers and they may then be operated independently, or through a single control, originating at the pattern chain. Specification 519,867 is referred to.
Patent GB-1141245-A (GB)
Title: Process for preparation of water-insoluble anthraquinone dyes
IPC: C09B1/54
Filed: 1967-04-28
Abstract: 1,141,245. Anthraquinone dyes. TOMS RIVER CHEMICAL CORP. 28 April, 1967 [28 April, 1966], No. 19752/67. Heading C4P. The invention comprises 1-amino-2,4-dialkoxyanthraquinones. The compounds are prepared by treating 1-amino-2,4-dihaloanthraquinones with an alkanol in the presence of an alkali. The compounds may be hydrolysed, e.g. in acid solution to 1-amino-2-alkoxy-4- hydroxy anthraquinones.
Patent GB-160856-A (GB)
Title: Improvements in or relating to rubber tyres for the wheels of motor vehicles
IPC: B60C11/16
Filed: 1919-08-12
Abstract: 160,856. Briggs, J. Aug. 12, 1919. Tread bands, projections, and surfaces.-Relates to metal tread-protectors, for solid or pneumatic tyres, of the kind described in Specification 113,018. In the form shown in Figs. 1 and 2 for solid tyres, each tread device consists of a metal shoe having side ribs 2 connected to end walls 3 through which the attachment bolts 5 are passed. The bolts are arranged at each side of a spoke, and other shorter plates may be fitted on the tread between the spokes. In the modification shown in Figs. 6 and 7 for pneumatic tyres, the tread shoes are also formed with thin bases 15, and are secured by bolts 26, the inner ends and nuts 12 of which are housed in a grooved rubber band 18 secured inside the tyre cover. A canvas flap 21, secured by one edge 22 to the tyre, is fitted with a rubber strip 25, which may have spaced blocks fitting the spaces between the bolts. Rubber-faced metal clips may also be fitted over the nuts 12. Reference has been directed by the Comptroller to Specification 113,018.
Patent GB-1458296-A (GB)
IPC: G01R17/00
Filed: 1974-05-06
Abstract: 1458296 Measuring displacement electrically; inductance bridge 6 May 1974 [21 May 1973] 19781/74 Headings G1N and G1U To prevent the production of a quadrature component at the output of a differential-inductance displacement-measuring bridge, each of the coils 3, 4 is shunted by a resistance 5, 6 of value W<SP>2</SP>L<SP>2</SP>/R<SP>5</SP> where W is the bridge A.C. supply radian frequency, L is the coil inductance with the armature positioned symmetrically, Rs is the coil resistance and wherein WL is selected to be substantially greater than R 5 . In an alternative embodiment, Fig. 2 (not shown) each coil is shunted by the eddy-current losses in a conductive tube guiding the magnetic armature. By choice of the configuration of the coils and armature angular displacement may be monitored, Fig. 3 (not shown).
Patent GB-750806-A (GB)
Title: Purification of terephthalic acid
Inventor: HEATH ROYDEN LEWIS
IPC: C07C51/43
Filed: 1953-07-17
Abstract: Terephthalic acid containing p-toluic acid is purified by heating with water under pressure to a temperature between 230 DEG  and 280 DEG  C., cooling the resultant solution to a temperature not below 165 DEG  C. and separating the terephthalic acid which crystallizes out.  The p-toluic acid may be isolated from the filtrate by further cooling.  The crude terephthalic acid may be a mixture containing about 5 per cent p-toluic acid obtained by the oxidation of p-xylene. An example is given.  Specification 726,675 is referred to.
Patent GB-894061-A (GB)
Title: Improvements in or relating to apparatus for measuring and delivering granular, powdery or like material
Inventor: SHEPHERD DONALD WELTON
IPC: G01G13/00
Filed: 1958-06-20
Abstract: 894,061. Conveyers. PORTASILO Ltd. June 4, 1959 [June 20, 1958], No. 19859/58. Class 104 (2). [Also in Group XVIII] Weighing apparatus in which the weighing receptacle is movable along the weight beam between a loading and an unloading position as described in Specification 748,361 [Group XVIII] is adapted for powerdriven transport of the receptacle by the provision of means associated with the hopper for engagement with an endless driven chain or the like disposed beside the weigh beam, the interengagement being such that the swinging of the weigh beam during loading is not inhibited thereby. To achieve this the chain may be mounted on the weight beam, but in the form shown the chain 10 is mounted on a channel member 13 fixed to the silo 2 from which the hopper 5, which constitutes the weighing receptacle, is to be loaded. The hopper is carried by a subframe 4 which runs on wheels 41 in a track formed in the main frame 1, which constitutes the weigh beam and which is pivoted at 3, the arrangement being such that the driving connection 19, 20 between the subframe 4 and the chain 10 is located on the pivot axis during loading. The tilting of the 235 weigh beam cuts off the feed as described in Specification 748,361 and also closes a switch 43 (Fig. 9) which is in series with a manually operable switch 47 (Fig. 3) by which the chain driving motor is started. Operation of switch 47 also energizes a solenoid which pivots the lever 40 (Fig. 9) to return the main frame to its untilted position. The initial movement of the chain is anticlockwise and drives the hopper from the loading position of Fig. 3 towards the unloading position of Fig. 9 until, on the disengagement of the connection 19, 20 at the end of the chain run, a second driving connection 21, 22 is made to complete the transport to the unloading position in which cable 32 actuates lever 27 to open the discharge gate of the hopper against the resistance of spring 28 which also tends to move the hopper (now disengaged from its driving connection) back towards the loading position. A succession of members 24 on the chain make temporary driving connections to return the hopper towards the unloading position and these, together with the spring 28, constitute jigging means to assist complete unloading. At the end of the unloading a cam member 34 on the chain operates reversing switch 36 to reverse the drive and may also operate switch 37 to stop the drive if the reversing action fails. The connection 21, 22 returns the hopper to the loading position and disengages when that position is reached, the switch 37 being operated by channel member 22 to stop the drive in the loading position in which the feed gate 9 of the silo outlet 8 is held open by the engagement therewith of the subframe 4. During loading the connection 19, 20 is located adjacent pivot 3 with the pin 19 situated loosely within the channel 20 and thus not inhibiting the balance operation.
Patent GB-531635-A (GB)
Title: Improvements in or relating to automatic regulating valves for compressors and the like
IPC: F04B49/24
Filed: 1939-07-08
Abstract: 531,635. Valves. HEYWOOD, C. F. July 8, 1939, No. 19920. [Class 135] An automatic regulating valve for compressors and the like is controlled by the pressure in the main reservoir on the remote side of a non-return valve in the delivery conduit and is adapted to discharge excess pressure into the atmosphere or into a further reservoir working at a lower pressure. The non-return valve member has a square cross-section working in a cylindrical bore and has a semi-elastic face 3a normally held in engagement with a seat 4 by a spring 5 adjusted by a tubular member 6. Reservoir pressure passes by way of passages 37, 36 to the inside of a bellows 35 secured to a detachable screwed closure 28 which is formed with guide socket for a plunger 33 secured to the free end of the bellows. A flanged sleeve 23 guided in the casing and loaded by a spring 26 bears on the closed end of the bellows and transmits its movement to a spindle 24a adapted to unseat a loose-ball valve 16 normally held to its seat by a spring 17. This spring is arranged between a projection on a sliding abutment 15 and an adjustable abutment 18 secured by a screwed cap 19. A second relief valve adjusted to open to a slightly higher pressure than the valve 16 has a valve member of square cross-section working in a cylindrical bore and provided with a semi-elastic face 39a normally held against a seat 42 by a spring 40. The spring engages a projection on the valve member and is adjusted by a screwed abutment 41 secured by a perforated screwed cap 44. When a second reservoir is provided it is fitted with a similar regulating valve. A mushroom or conical valve may replace the loose-ball valve.
Patent GB-984760-A (GB)
Title: Improvements in devices for elevating and stacking piece goods such as crates
IPC: B65G17/14
Filed: 1961-06-05
Abstract: 984,760. Stacking, loading machines; endless conveyers. WEISSENBURG-MINERALTHERMEN A.G. June 5, 1961 [June 11, 1960], No. 20126/61. Headings B8A and B8C. A device for elevating and stacking articles comprises endless chains 3 provided with carrying frames 1 guided in guide rails 5, and is characterized in that spring-loaded grabs 8 carrying feeler rollers 10 co-operating with cam surfaces 15 are articulated on the frames 1 in such a way that when the rollers 10 run on to the cam surfaces 15 they are swung against spring means into the converging track of the articles to be transported and, after having engaged an article 16 remain in this position due to the connection effected by the weight of the article to be transported until the connection becomes ineffective due to the article being supported, e.g. on the uppermost article of a stack, whereupon the grabs under the effect of the spring jump back to their inoperative initial position. Frames 1 bearing rollers 4 running in guide rails 5 are suspended on the chains 3 by means of bolts 2. Spring- loaded grabs 8 are mounted on shafts 7, supported in the frames 1, the shafts being rigidly connected to levers 9 bearing rollers 10 which bear against the edges of the guide rails 5. Articles 16 fed in by roller conveyers to a loading grate 19 are seized between pairs of grabs 8, carried on ascending chains 3, actuated by means of cam plates 15. The articles are conveyed upwardly, about chain sprockets (not shown) and then downwardly to a receiving platform 21, where they are deposited on a stack 22 and the grabs are automatically returned to their inoperative position by springs 13. The height of a stack may be ascertained by photo-electric means 24, 25, or alternatively the weight of a stack may be controlled by a weighing device, a ram 26 being actuated to deposit the stack on to rollers 28 at a predetermined height or weight. The plates 15 may be readily removable from the path of the rollers 10 so that the grabs remain in their inoperative position whilst passing loading or receiving platforms. The plates may be adjustable or exchangeable to enable different sized articles to be transported.
Patent GB-358057-A (GB)
Title: Improvements in late news and like boxes
IPC: B41B1/08
Filed: 1930-07-02
Abstract: 358,057. Printing late news. QUICK, C. G., 109, Borough Road, London. July 2, 1930,No.20133. [Class 300 (ii).] Fudge boxes.-In a fudge box, means are provided for positively moving the slug-retaining clips out of engagement with the slugs. The clips are also preferably positively moved into clamping position. The clips for engaging the opposite ends of the slugs are also of similar construction. The body 1, Fig. 1, of the box is provided with a recess 2 to receive the slugs 3 and with a stud 5 and pin 6 to position it on the printing cylinder. The clips 17, Figs. 1 and 6, are provided with forks 16, which engage grooves 15 in nuts 14 held against rotation by set-screws 18, and the nuts are engaged by a screwed rod 8 provided with an operating head 19. The ends of the body 1 are provided with integral bevelled portions adapted respectively to engage a fixed dog on the cylinder and a spring-pressed dog slidably mounted on the cylinder.
Patent GB-478648-A (GB)
Title: Lawn edging shears
IPC: A01G3/06
Filed: 1936-07-21
Abstract: 478,648. Shears. KENNETT, C. July 21, 1936, No. 20133. [Class 30] Lawn-edging shears comprise a blade l forming part of an L-shaped member 3 secured in a wooden handle 4, and a blade 9 pivoted at 11 to the blade 1 and attached to a separate handle 12. A stop 19 limits the motion.
Patent GB-1277003-A (GB)
Title: Improvements in or relating to electro-pneumatic braking systems
Inventor: BOWRAN JACK
IPC: B61H7/08
Filed: 1968-04-29
Abstract: 1277003 Railway brakes DAVIES & METCALFE Ltd 1 July 1969 [29 April 1968] 20136/68 Heading F2F [Also in Division H1] An electro-pneumatic braking system on a rail vehicle is manually controlled by the movement of a permanent magnet 12 so as to operate a selected one of a plurality of sealed magnetic reed contact units 10. The braking solenoid 6 is thus connected to one of a number of tappings 9 on a potentiometer 7. A low applied potential results in a high braking force so providing failsafe operation. The units 10 are arranged in an arc as shown.
Patent GB-516787-A (GB)
Title: Improvements relating to the cooling fins of air-cooled internal-combustion engines
IPC: F02F1/32
Filed: 1938-07-07
Abstract: 516,787. Cooling cylinders. BRISTOL AEROPLANE CO., Ltd., FEDDEN, A. H. R., and NIXON, F. July 7, 1938, No. 20187. [Class 7 (ii)] Means for damping the vibrations of cylinder pins comprise pads 17 of resilient material which contact with the ribs 16. The pads are made of a synthetic rubber-like compound, e.g., Neoprene, and are held in place, either by a cement or by a support 24 from another structural member. The ribs penetrate recesses in the pads but clearances 25 are left at the bases of the recesses.
Patent GB-355438-A (GB)
Title: Improvements in or relating to condensing apparatus for steam or other gaseous fluids
IPC: F28B1/02
Filed: 1930-07-03
Abstract: 355,438. Surface condensers. SHEPHERD, G. R., 2, Norfolk Street, Strand, London. July 3, 1930, No. 20199. [Class 64 (iii).] In a condenser in which the tubes 16, are supported by intermediate plates 23, 24, 25, which divide the condenser into compartments 26 .. 29, the tubes and the plates 23, 24, 25 are spaced from the side walls or from both bottom and side walls to permit of radial flow and lateral communication between the sections, and independent air offtakes are provided in the interior of each section or group of sections. As shown, the off-takes are boxes 31 with inlets 32 and with outlet conduits 33 connected with separate ejectors 38 which may be regulated to ensure an even flow of steam through the different sections of the condenser.